Lindy Wood found conquermaths:

• Significantly improves attainment“Consistent high level results taking all children individually to their potential - that being much higher than their 'expected' level.”
• Significantly improves teaching efficiency and productivity“There is no way that I could teach/mark a class efficiently in all the areas and to all the levels that they presently achieve - nor could the children produce the amount of work as successfully as they do through Conquer Maths - their files are bulging!”
• Significantly reduces teacher workload“See previous answer - not a hope of marking the amount of work the class presently produce.”
• Slightly provides school data“only effect on school data is that the children perform better in tests and these results are reflected in the school data ”
• Slightly improves school processes“Not sure what is meant by this.”